Issue 14, 2022

Thiochromenocarbazole imide: a new organic dye with first utility in large area flexible electroluminescent devices

Abstract

The N-annulation of a benzothioxanthene imide (BTI) derivative is demonstrated herein affording the unprecedented thiochromenocarbazole imide (TCI). The impact of this chemical modification on the molecular structure and optoelectronic properties is investigated using a combination of single crystal X-ray diffraction, optical absorption spectroscopy, photoluminescence spectroscopy, cyclic voltammetry, and theoretical calculations. Comparison with the parent compound highlights the great potential of the newly synthesized molecule for applications in electroluminescent devices. As a proof of concept and seminal use, TCI-based dimers were successfully prepared and embedded in solution-processed organic light emitting devices (OLEDs). With improved solubility in non-halogenated solvents and good film forming capabilities, large active area (160 mm2) OLEDs, fabricated in ambient air on flexible substrates via slot-die-coating, were demonstrated.

Graphical abstract: Thiochromenocarbazole imide: a new organic dye with first utility in large area flexible electroluminescent devices

Supplementary files

Article information

Article type
Research Article
Submitted
04 Apr 2022
Accepted
04 Jun 2022
First published
08 Jun 2022

Mater. Chem. Front., 2022,6, 1912-1919

Thiochromenocarbazole imide: a new organic dye with first utility in large area flexible electroluminescent devices

J. M. A. Castán, C. Amruth, P. Josse, L. A. Galan, P. S. Marqués, M. Allain, O. Maury, T. Le Bahers, P. Blanchard, C. Monnereau, G. C. Welch and C. Cabanetos, Mater. Chem. Front., 2022, 6, 1912 DOI: 10.1039/D2QM00299J

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